Home / 28,446.88-42,670.31-7,670.38

Finding the Fourth Proportional to 28,446.88, 42,670.31 and 7,670.38

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Solution

The fourth proportional to 28,446.88, 42,670.31 and 7,670.38 is: 11,505.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.88 : 42,670.31 = 7,670.38 : x
  2. Step 2: Convert to fraction form
    28,446.88/42,670.31 = 7,670.38/x
  3. Step 3: Cross multiply
    28,446.88x = 42,670.31 × 7,670.38
  4. Step 4: Simplify right side
    28,446.88x = 327,297,492.42
  5. Step 5: Solve for x
    x = 327,297,492.42/28,446.88
  6. Step 6: Final answer
    x = 11,505.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.